RA01
2 component net-radiation sensor
RA01 is a 2-component radiation
sensor that is used for scientific-grade energy balance studies. The instrument
has separate measurements of solar (Short Wave or SW) and Far Infra-Red (Long
Wave or LW) radiation. Combined with estimates of SW solar albedo- and of
surface temperature, this instrument can also be used for estimation of
net-radiation. The advantage in this approach are reduction of costs and
independence from local surface properties.
Free: For a nice clear print of the original product
brochure (PDF) click here.
Figure 1
RA01 2-component radiation sensor.
SW solar radiation sensor or
pyranometer (1), LW Far Infra-Red radiation sensor or pyrgeometer (2), radiation
shield (3), levelling assembly for x- and y axis (4, 5 and 7).
Figure 2 RA01 top view. Standard cable
length is 5 m. Cable can
be installed / replaced by the user. Attachement to a 1 inch tube (2), not
included, is extremely easy, levelling possibilities are included. Dimensions in
mm.
RA01 serves to measure 2 separate
components of the surface radiation balance. Working completely passive, using a
thermopile sensors, generates 4 small output voltage proportional to the
incoming solar SW and LW flux. The solar radiation sensor is also called
pyranometer, the LW sensor is also called pyrgeometer. For calculation of sky-
and surface temperature, a Pt100 temperature sensor is included in the
pyrgeometer.
In order to avoid deposition of dew, the
pyrgeometer may be heated. A 2-axis levelling assembly is included.
The RA01 cable can easily be installed
or replaced by the user.
See also NR01 4-component net-radiameter,
on the previous page, which is a double side version of RA01.
RA01 SPECIFICATIONS
General:
Pyranometer (SW):
LW Pyrgeometer (LW):
OPTIONS
- Additional cable length x metres (add
to 5m)
- Upgrade to NR01
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